Concerning star turns, ring versatile musician (3-3,4)

I believe the answer is:

one-man band

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'versatile musician' is the definition.
(I've seen this before)

'concerning star turns ring' is the wordplay.
'concerning star turns' becomes 'oneman' (I can't justify this - if you can you should believe this answer much more).
'ring' becomes 'band' (synonyms).
'oneman'+'band'='ONE-MAN-BAND'

Can you help me to learn more?

(Other definitions for one-man band that I've seen before include "Single person running a business" , "Sole trader" , "Multitasking musician" , "He provides his own accompaniment" .)

I've seen this clue in The Telegraph.

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